Alert archive / Iowa / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 299, NWS Des Moines, IA

October 4, 2005Kossuth County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Oct 4, 2005, 8:33 PM CDT for Kossuth County, Iowa. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 4, 2005, 8:33 PM CDT (01:33 UTC)
Expired: Oct 4, 2005, 9:02 PM CDT
In force: 29 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Kossuth County, IA

The radar

The Des Moines radar (KDMX), 177 km from the middle of the area, began a volume at 01:35 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 4, 4:05 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.6 hours before the alert went out and 183 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 938 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 429 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 13.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KDMX 050133
SVRDMX
IAC109-050215-
/O.NEW.KDMX.SV.W.0299.051005T0133Z-051005T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
833 PM CDT TUE OCT 4 2005

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KOSSUTH COUNTY IN NORTH CENTRAL IOWA.

* UNTIL 915 PM CDT.

* AT 830 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 16 MILES EAST OF ESTHERVILLE TO 12 MILES EAST OF EMMETSBURG TO
  13 MILES SOUTHEAST OF EMMETSBURG...OR ALONG A LINE EXTENDING FROM
  36 MILES NORTHEAST OF SPENCER TO 35 MILES EAST OF SPENCER TO 34
  MILES EAST OF SPENCER...AND MOVING NORTHEAST AT 55 MPH.

* SEVERE THUNDERSTORMS WILL BE...
  NEAR SWEA CITY BY 840 PM CDT.
  NEAR ALGONA MUNICIPAL AIRPORT BY 845 PM CDT.
  NEAR LEDYARD BY 850 PM CDT.
  NEAR TITONKA BY 855 PM CDT.
  NEAR WESLEY BY 900 PM CDT.

THE LOCATIONS OF FENTON...WHITTEMORE...LONE ROCK...BURT AND LAKOTA
ARE ALSO IN THE PATH OF THESE SEVERE THUNDERSTORMS.

MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. IF YOU LIVE IN A
MOBILE HOME...SEEK SHELTER IN A STURDY BUILDING.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS IN RUTHVEN. 
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS

LAT...LON 4348 9445 4315 9446 4293 9444 4293 9399
      4348 9399 4348 9403

$$

DONAVON

2 follow-up statements

000 
WWUS53 KDMX 050156
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
856 PM CDT TUE OCT 4 2005

IAC109-050215-
/O.CON.KDMX.SV.W.0299.000000T0000Z-051005T0215Z/
KOSSUTH IA-
856 PM CDT TUE OCT 4 2005

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KOSSUTH COUNTY
UNTIL 915 PM CDT...

AT 852 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 9 MILES NORTH OF BANCROFT TO 6 MILES NORTHEAST OF ALGONA TO
ALGONA...OR ALONG A LINE EXTENDING FROM 52 MILES EAST OF SPENCER TO
44 MILES NORTH OF FORT DODGE TO 35 MILES NORTH OF FORT DODGE...AND
MOVING EAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE...
  NEAR WESLEY BY 910 PM CDT.

THE LOCATIONS OF LEDYARD...ALGONA MUNICIPAL AIRPORT...BURT...LAKOTA
AND TITONKA ARE ALSO IN THE PATH OF THIS LINE OF SEVERE
THUNDERSTORMS.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL...DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE
OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4348 9445 4315 9446 4293 9444 4293 9399
      4348 9399 4348 9403

$$

DONAVON

000 
WWUS53 KDMX 050202
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
902 PM CDT TUE OCT 4 2005

IAC109-050212-
/O.CAN.KDMX.SV.W.0299.000000T0000Z-051005T0215Z/
KOSSUTH IA-
902 PM CDT TUE OCT 4 2005

...THE SEVERE THUNDERSTORM WARNING FOR KOSSUTH COUNTY HAS BEEN
CANCELLED...

AT 900 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND NO 
LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE 
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
TUESDAY EVENING FOR NORTHWESTERN IOWA.

LAT...LON 4348 9445 4315 9446 4293 9444 4293 9399
      4348 9399 4348 9403

$$

KINNEY

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 4, 4:00 PM CDT, 4 hours 33 minutes earlier.

Area forecast discussion, Oct 4, 4:00 PM CDT, 4 hours 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
400 PM CDT TUE OCT 4 2005

.DISCUSSION...
FORECAST ISSUES TODAY WILL CENTER AROUND THE COLD FRONTAL PASSAGE
AND ASSOCIATED PRECIP ACTIVITY ALONG AND BEHIND THE FRONT.  AT 08Z
THE FRONT HAS PUSHED TO JUST WEST OF THE IOWA BORDER.  AS THE
SURFACE LOW RIDES UP THE FRONT AND INTO SOUTHERN MINNESOTA THE FRONT
WILL PICK UP SPEED.  BY 15Z THE FRONT IS FORECAST TO BE THROUGH HALF
THE STATE.  THE MODELS ARE IN DECENT AGREEMENT ON TIMING ISSUES
ALTHOUGH THE NAM HAS NOW BECOME THE SLOWER MODEL.  THE GFS STILL HAD
THE BEST CONSISTENCY AND INITIALIZED BETTER THAN THE NAM SO I WENT
WITH THE GFS ON TIMING AND TEMPS.  THE SLIGHTLY FASTER ONSET OF THE
COLD FRONT SHOULD MAKE FOR COOLER TEMPS.  AT OUR CURRENT TEMP OF 73
AT DMX...THIS WILL LIKELY BE THE HIGH FOR TODAY.  STRONG CAA WL KEEP
TEMPS STEADY THIS MORNING WITH FALLING TEMPS ALL AFTERNOON.

I AM NOT PARTICULARLY IMPRESSED WITH CONVECTIVE TRENDS WITH THE
FROPA.  THE BEST CAPES WL BE IN MN AND THEY LOOK TO RANGE BETWEEN
1200 TO 1500 J/KG.  IN IA CAPES OF 900-1100 IS ALL THE MODELS ARE
FORECASTING. AS FOR SHEAR...THE BEST SHEAR IS POST FRONTAL AND THE
SHEAR IS IMPRESSIVE BEHIND THE FRONT BUT IT IS OUT OF PHASE.  GIVEN
THE MARGINAL CAPES AND BEST SHEAR POST FRONTAL I THINK THE SEVERE
THREAT WILL BE MINIMAL OVER OUR CWA.  FURTHER EAST WHERE THERE WILL
BE MORE DAYTIME HEATING THE CHANCES WILL BE A LITTLE BETTER...AS
WILL CHANCES BE CLOSER TO THE LOW IN MN.  GIVEN THE EXPECTED
ACCELERATION OF THE FRONT THROUGH THE CWA FLASH FLOOD CONCERNS ARE
ALSO MINIMAL.

HIGH PRESSURE BUILDS IN BEHIND THE FRONT TONIGHT AND TEMPERATURES
WILL COOL INTO THE MID TO UPPER 30S.  THE MODELS WANT TO CLEAR US
OUT FAIRLY QUICKLY AND BASED ON THE EXPANSIVE CLOUD COVER TO THE
NORTH AND WEST I THINK THAT MAY BE A BIT OVERDONE.  IF THE CLOUDS
HANG IN THEN TEMPS WILL NOT DROP AS MUCH AS WE THINK.  WE WILL
ADVISE THE DAY SHIFT OF THIS CAVEAT.  FOR THURSDAY THROUGH SATURDAY
HIGH PRESSURE REMAINS FIRMLY IN PLACE AND TEMPS WILL BE QUITE COOL.
THERE WILL BE ABOUT A 30 DEGREE DIFFERENCE IN HIGHS FROM EARLIER
THIS WEEK AND THURSDAY.  BY LATE IN THE WEEKEND AND THE START OF
NEXT WEEK RETURN FLOW AROUND THE HIGH WILL ACT TO MODERATE TEMPS AND
WE SHOULD SEE A RETURN TO 70 DEGREE READINGS.  THIS WILL PROBABLY BE
SHORT LIVED THOUGH AS EXTENDED MODELS WANT TO CARVE A BIG TROUGH
ACROSS THE WESTERN PLAINS ON TUESDAY AND MOVE IT OVER THE UPPER
MIDWEST TUESDAY NIGHT AND WEDNESDAY.  I HAVE TWEAKED THE EXTENDED
FOR TIMING OF THE TROUGH.  TEMPS SHOULD DIP ONCE AGAIN TO BELOW
NORMALS ON WEDNESDAY WITH THE PASSAGE OF THE TROUGH.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

FAB

Hazardous weather outlook, Oct 4, 3:56 PM CDT, 4 hours 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
356 PM CDT TUE OCT 4 2005

IAZ004>007-015>017-023>026-033>035-044-045-051100-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-SAC-CALHOUN-WEBSTER-CRAWFORD-
CARROLL-
356 PM CDT TUE OCT 4 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN
IOWA...ALONG AND NORTHWEST OF A LINE FROM HAMPTON...TO GOWRIE...TO CARROLL.

.DAY ONE...REST OF THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL CONTINUE LATE THIS AFTERNOON AND
EARLY THIS EVENING. A FEW STORMS COULD PRODUCE HAIL UP TO QUARTER
SIZE AND 60 MPH WIND GUSTS. AN ISOLATED TORNADO CANNOT BE RULED OUT
BEFORE SUNSET. ADDITIONAL NON-SEVERE THUNDERSTORMS ARE POSSIBLE AFTER 4 AM
WEDNESDAY ACROSS AREAS FROM ESTHERVILLE TO DENISON.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH EARLY AFTERNOON
WEDNESDAY. ISOLATED SEVERE STORMS ARE POSSIBLE...WITH 60 MPH WINDS
AND PENNY SIZE HAIL THE MAIN THREATS. THE MOST FAVORED AREA FOR
SEVERE WEATHER IS ALONG AND EAST OF THE INTERSTATE 35 CORRIDOR.

PATCHY FROST IS EXPECT LATE THURSDAY NIGHT AS TEMPERATURES DIP
INTO THE LOW TO MID 30S.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THROUGH 7 OR 8 PM THIS
EVENING. ACTIVATION IS ALSO POSSIBLE WEDNESDAY THROUGH EARLY AFTERNOON.

IAZ027-028-036>039-046>050-057>062-070>075-081>086-092>097-051100-
BUTLER-BREMER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-
STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-
CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-
MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
356 PM CDT TUE OCT 4 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN IOWA...SOUTHEAST OF A LINE FROM HAMPTON...TO GOWRIE...TO CARROLL.

.DAY ONE...TONIGHT

NON-SEVERE THUNDERSTORMS ARE POSSIBLE AFTER 4 AM WEDNESDAY ACROSS
AREAS FROM AUDUBON TO TAYLOR.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS ARE EXPECTED WEDNESDAY FROM WEST TO EAST
ACROSS CENTRAL AND SOUTHERN IOWA. ISOLATED SEVERE STORMS ARE
POSSIBLE...WITH 60 MPH WINDS AND PENNY SIZE HAIL THE MAIN THREATS.
THE MOST FAVORED AREA FOR SEVERE WEATHER IS ALONG AND EAST OF THE
INTERSTATE 35 CORRIDOR.

PATCHY FROST IS EXPECT LATE THURSDAY NIGHT AS TEMPERATURES DIP
INTO THE LOW TO MID 30S.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE WEDNESDAY...MAINLY FROM LATE
MORNING THROUGH THE AFTERNOON HOURS.

KINNEY

In the hours before

Local storm report, Oct 4, 3:42 PM CDT, 4 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
342 PM CDT TUE OCT 04 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0335 PM     HAIL             2 E CYLINDER            43.09N 94.51W
10/04/2005  0.88 INCH        PALO ALTO          IA   PUBLIC

&&

RDONAVON

Local storm report, Oct 4, 4:05 PM CDT, 4 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
405 PM CDT TUE OCT 04 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     HAIL             4 N WHITTEMORE          43.12N 94.42W
10/04/2005  0.88 INCH        KOSSUTH            IA   PUBLIC

            MOSTLY PEA SIZED HAIL WITH A FEW UP TO NICKEL SIZED

&&

RDONAVON

Local storm report, Oct 4, 4:35 PM CDT, 3 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
435 PM CDT TUE OCT 04 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0339 PM     HAIL             5 NE CYLINDER           43.14N 94.48W
10/04/2005  E1.75 INCH       PALO ALTO          IA   BROADCAST MEDIA

            A FARMER REPORTED GOLFBALL HAIL COVERING THE GROUND TO
            BROADCAST MEDIA - KICD RADIO.

&&

Local storm report, Oct 4, 5:06 PM CDT, 3 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
506 PM CDT TUE OCT 04 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     HAIL             2 SSW RAKE              43.45N 93.94W
10/04/2005  E1.00 INCH       WINNEBAGO          IA   LAW ENFORCEMENT

&&

Local storm report, Oct 4, 5:42 PM CDT, 2 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DES MOINES IA
542 PM CDT TUE OCT 04 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0339 PM     HAIL             5 NE CYLINDER           43.14N 94.48W
10/04/2005  1.75 INCH        PALO ALTO          IA   BROADCAST MEDIA

            A FARMER REPORTED GOLFBALL HAIL COVERING THE GROUND TO
            BROADCAST MEDIA - KICD RADIO.

0455 PM     HAIL             2 SSW RAKE              43.45N 93.94W
10/04/2005  1.00 INCH        WINNEBAGO          IA   LAW ENFORCEMENT

&&

Local storm report, Oct 4, 6:43 PM CDT, 1 hour 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
643 PM CDT TUE OCT 04 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0426 PM     HAIL             3 E GRUVER              43.39N 94.64W
10/04/2005  1.00 INCH        EMMET              IA   PUBLIC

            QUARTER HAIL COVERED THE GROUND.

&&

RDONAVON

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 4, 7:57 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto	48 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2005 Every severe thunderstorm warning in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.